Can Hydraulic Circuits Transport Energy Without Compressible Oil?

AI Thread Summary
Energy in hydraulic circuits is transported through the work done by incompressible oil rather than through changes in potential energy. Although oil is nearly incompressible, it can still experience pressure changes without altering its density. The internal energy changes of liquids due to pressure increases are minimal and do not contribute significantly to energy transport. Energy is effectively transferred from the source, such as a motor, to the load only when there is movement at the contact surface. Therefore, movement is essential for energy transport in hydraulic systems.
Jakob Weg
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How can energy be transported in a hydraulic circuit? The volume of oil is nearly incompressible. Therefor energy can not be transported in the form of potential (inner) energy of the oil.
 
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PΔV.
 
Incompressible doesn't mean that there can't be any change in pressure, it just means that the density doesn't change.
 
Jakob Weg said:
How can energy be transported in a hydraulic circuit? The volume of oil is nearly incompressible. Therefor energy can not be transported in the form of potential (inner) energy of the oil.

Internal energy change of liquids after pressure is increased is negligible. The energy from the source (motor) is transported to the load by work of the liquid in contact with the load when the surface of contact moves. If it does not move, there is no transport of energy.
 

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